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Reconfigurable photonic RF filters based on integrated Kerr frequency comb sources

  • Xingyuan Xu
  • , Mengxi Tan
  • , Jiayang Wu
  • , Thach G. Nguyen
  • , Sai T. Chu
  • , Brent E. Little
  • , Roberto Morandotti
  • , Arnan Mitchell
  • , David J. Moss*
  • *Corresponding author for this work

    Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

    Abstract

    We demonstrate two categories of photonic radio frequency (RF) filters based on integrated optical micro-combs. The first one is based on the transversal filtering structure and the second one is based on the channelization technique. The large number of wavelengths brought about by the microcomb results in a significantly increased RF spectral resolution and a large instantaneous bandwidth for the RF filters. For the RF transversal filter, we demonstrated Q factor enhancement, improved out-of-band rejection, tunable centre frequency, and reconfigurable filtering shapes. While a high resolution of 117 MHz, a large RF instantaneous bandwidth of 4.64 GHz, and programmable RF transfer functions including binary-coded notch filters and RF equalizing filters with reconfigurable slopes are demonstrated for the RF channelized filter. The microcomb-based approaches feature a potentially much smaller cost and footprint, and is promising for integrated photonic RF filters.
    Original languageEnglish
    Title of host publication2019 IEEE International Topical Meeting on Microwave Photonics (MWP)
    PublisherIEEE
    ISBN (Electronic)9781728136257
    ISBN (Print)9781728136264
    DOIs
    Publication statusPublished - Oct 2019
    Event2019 IEEE International Topical Meeting on Microwave Photonics, MWP 2019 - Shaw Centre, Ottawa, Canada
    Duration: 7 Oct 201910 Oct 2019
    http://www.site.uottawa.ca/~jpyao/MWP2019/

    Publication series

    NameIEEE International Topical Meeting on Microwave Photonics, MWP

    Conference

    Conference2019 IEEE International Topical Meeting on Microwave Photonics, MWP 2019
    PlaceCanada
    CityOttawa
    Period7/10/1910/10/19
    Internet address

    Research Keywords

    • micro-ring resonators
    • Microwave photonics

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